Feed-water heater.



J. H. STREICH. FEED WATER HEATER. APPLICATION FILED 1120.30, 1908.

Pauented Oct. 5, 1909.

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@uli/tvnews JOHN H. STREICH, OF OSHKOSH, WISCONSIN.

FEED-WATER HEATER.

Specification of Letters Patent.

Patented Get. 5, 1909.

Application led December 30, 1908. Serial No. 469,929.

To alt 'whom t may concern:

Be it known that I, JOHN H. Stranieri, a citizen of the United States,residing at Qshkosh, in the county of Vinnebago and State of 'Wisconsimhave invented certain new and useful Improvements in Feedlater Heaters;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to feed water heaters and particularly to that typewhich is used upon locomotive boilers.

The object of the invention is to provide a heater which may be cheaplyinstalled and which will effectively heat the water to be fed to theboiler and at the same time will occupy a small space.

lVith the foregoing and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts, as will be more fully described and particularly pointed out inthe appended claim.

In the accompanying drawings, Figure 1 is a fragmentary longitudinalvertical section. Fig. 2 is a transverse vertical section. Fig. 3 is atop plan view.

Referring more especially to the drawings, l represents the boiler, 2,the smoke box at the end thereof, and the usual flue tubes contained inthe boiler.

In order to adjust the device I secure a plate 4t over the smoke boxwith a central opening therein 5 for a purpose which will be hereinafterdescribed. This plate 11 with the boiler casing forms a chamber or tankG to which the feed water is conducted by a pipe 7, which will behereinafter termed the inlet pipe.

The stack is shown at 8 and inside thereof is a concentric tube orcylinder 9 forming a chamber 10 which constitutes a continuation of thechamber or tank 6. The upper end of this chamber 10 is closed by anannular cap 11, having a pipe coupling 12 formed in one side thereof toreceive the pipe 13, the inner end of which is connected to a reducingcoupling 14.

The outlet pipe or the pipe which feeds the water from the heater tankto the boiler is shown at 15 as extending downwardly and laterallythrough the smoke box 2 and having at its upper end a reducing coupling16. Between the reducing couplings 14 and 16,

I provide an enlarged pipe 17 which is arranged concentric with the tube9 which leaves the annular smoke passage 1S. A suitable iiushing openingclosed by a block 19 is provided at the lower edge of the tank G and asuitable hand-hole 20 for cleaning purposes is provided and may beclosed in any suitable manner.

In operation the water enters through the inlet pipe 7, circulatesaround through the tank 6 and up around the stack tank or chamber l()through the pipes 13 and 17 to the out-let pipe 15 where it is led tothe boiler in the usual manner. The water at this latter stage will befound highly heated and sometimes in a boiling` state. This conditionpermits of ready forming of steam when injected into the boiler by theusual injector pumps, thereby economizing the amount of fuel used andalso utilizing the waste heat passing out of the stack which isotherwise wasted.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention, as defined in theappended claim.

I claim as my invention In a device of the class described, thecombination with a boiler, of a plate bridged across the smoke boxthereof and forming with the boiler a tank, a smoke stack communicatingwith the smoke box through the tank, a cylindrical casing surroundingthe stack and attached thereto and to the boiler, said casing formingwith the stack a continuation of the tank, a centrally, disposed,enlarged tube arranged within the stack, an inlet pipe connected to thetank, an outlet pipe connected to said tube and passing through thesmoke box to the outside of the boiler, and a pipe connecting the tankand tube at the top of the stack.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- Louis THIEL.

